The Procter Gamble Company

Emma Louise Pretswell

Lynette Anne Makins Holland

Gabor Heltovics

Jane Margaret Warwick

Axel Konig

Georgina Lyndsey Claire Milich

Delyth Myfanwy Jenkins

Karen Lorraine Sutton

Andrew James Peter Shefferd

Neil Archibald MacGilp

Mark Brian Ripley

Clyde Gibbons

Gordon Robert Davison

The invention provides a method for improving release, on a surface, of a fragrance from an entrapment structure of at least one fragrance oil and at least one entrapment material. The method destabilizes the entrapment structure by providing at least one trigger molecule which preferentially associates with the entrapment material; and/or at least one release agent which at least partially disrupts the entrapment structure. The invention also provides a composition for improving release of a fragrance from a surface. The composition comprises at least one fragrance oil; at least one entrapment material, the at least one fragrance oil and the at least one entrapment material being capable, in use, of forming an entrapment structure on the surface. The composition also comprises at least one destabilizing material, which permits formation of the entrapment structure on the surface but which destabilizing material can, in use, destabilize the entrapment structure by providing at least one trigger molecule which preferentially associates with the entrapment material; and/or at least one release agent which partially disrupts the entrapment structure; and at least one compatible solvent which doesn't interfere with the formation of the entrapment structure on the surface. The present methods and compositions can improve fragrance perception, by overcoming the differences in fragrance perception that result from different surface, for example, skin, hydration levels and/or different surface types.

Methods and compositions for improved fragrancing of a surface

Compositions comprising chitosan in the form of a network of nano-sized fibres. There is also provided a process for making such compositions. The compositions have improved solubility and activity. The compositions are useful in hair care, skin care, odour control, wound care, blood management, sanitary compositions, oral care, film formation, hard surface treatment, fabric treatment, release of hydrophobic or hydrophilic materials, plant care, water purification and drug delivery.

Chitosan compositions

Growing community of inventors

Bracknell, United Kingdom

Emma Louise Pretswell